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1993 Pontiac Grand Prix Fault codes.

Tiny
DEADPOOL3080
  • MEMBER
  • 1993 PONTIAC GRAND PRIX
Computer problem
1993 Pontiac Grand Prix 6 cyl Front Wheel Drive Automatic

How do get the fault codes on a 1993 Pontiac Grand Prix without a code reader?
Sunday, April 11th, 2010 AT 11:46 AM

1 Reply

Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
Use a paper clip or a wire and junp connect terminal A& B
Turn ignition on check engine light should flash out the codes


https://www.2carpros.com/forum/automotive_pictures/99387_Graphic1_709.jpg



Grounding the ALDL test terminal "B" at this time should cause SERVICE ENGINE SOON light to flash a Code 12, followed by any codes stored in ECM memory.
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Monday, April 12th, 2010 AT 6:45 PM

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